2,2-Dimethylbutane

2,2-Dimethylbutane
Neohexane molecule
Neohexane molecule
Names
IUPAC name
2,2-Dimethylbutane[1]
Other names
Neohexane,[2] 22DMB
Identifiers
1730736
75-83-2 Yes
ChEMBL ChEMBL142735 Yes
ChemSpider 6163 Yes
EC number 1730736
Jmol-3D images Image
PubChem 6403
UN number 1208
Properties
Molecular formula
 C6H14
Molar mass 86.18 g·mol−1
Appearance Colorless liquid
Odor Odorless
Density 649 mg mL−1
Melting point −102 to −98 °C; −152 to −145 °F; 171 to 175 K
Boiling point 49.7 to 49.9 °C; 121.4 to 121.7 °F; 322.8 to 323.0 K
log P 3.51
Vapor pressure 36.88 kPa (at 20 °C)
6.5 nmol Pa−1 kg−1
1.369
Thermochemistry
Specific
heat capacity (C)
 189.67 J K−1 mol−1
272.00 J K−1 mol−1
Std enthalpy of
formation (ΔfHo298)
 −214.4–−212.4 kJ mol−1
Std enthalpy of
combustion (ΔcHo298)
 −4.1494–−4.1476 MJ mol−1
Hazards
GHS pictograms
GHS signal word DANGER
H225, H304, H315, H336, H411
P210, P261, P273, P301+310, P331
EU Index 601-007-00-7
EU classification F Xn N
R-phrases R11, R38, R51/53, R65, R67
S-phrases (S2), S16, S29, S33
NFPA 704
Flammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g., gasoline) Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
3
1
0
Flash point −29 °C (−20 °F; 244 K)
425 °C (797 °F; 698 K)
Explosive limits 1.2–7.7%
US health exposure limits (NIOSH):
none[3]
Related compounds
Related alkanes
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

2,2-Dimethylbutane, trivially known as neohexane, is an organic compound with formula C6H14 or (H3C-)3-C-CH2-CH3. It is therefore an alkane, indeed the most compact and branched of the hexane isomers — the only one with a quaternary carbon and a butane (C4) backbone.

See also

References

  1. ↑ "2,2-DIMETHYLBUTANE - Compound Summary". PubChem Compound. USA: National Center for Biotechnology Information. 26 March 2005. Identification and Related Records. Retrieved 9 March 2012.
  2. ↑ Haynes, William M. (2010). Handbook of Chemistry and Physics (91 ed.). Boca Raton, Florida: CRC Press. p. 3-194. ISBN 978-1439820773.
  3. ↑ "NIOSH Pocket Guide to Chemical Hazards #0323". National Institute for Occupational Safety and Health (NIOSH).